(a) To fit the WWII footage, WWII technology was used in the initial filming.

(b) The film is based on actual letters from a deceased soldier killed on D-Day, to his parents. Not unlike Zwick's 'Glory' in that respect. That's where the Imperial War Museum came in, that and the real footage.

This just arrived today, and I've finally found a little time listen to some of it. I'm a big admirer of "The Disappearance" (film and score), but "Overlord" is a really magnificent score - the string writing is glorious and transparent, and very English in several spots (there are some interesting gestures that remind me of Arthur Bliss's writing for strings). This one will be getting many repeat listenings over the next few weeks. (And I'm looking forward to spending more appreciable time with the other two in this set.) Additionally, the music does sound quite good, and I'm glad it was rescued in the nick of time - it would have been a shame if the stereo tapes ended up "lost." Thanks to Kritzerland for such a fine job in saving and presenting this hidden gem.